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  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
  • OSA Technical Digest (CD) (Optica Publishing Group, 2008),
  • paper CThBB2

Measurement of the Optical Properties of Graphene from THz to Near-IR

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Abstract

We present experimental results on the optical absorption spectrum of graphene from near-IR to THz frequencies for the first time. At near-IR and mid-IR wavelengths the interband optical absorption is found to have a flat spectrum consistent with the relativistic massless Dirac-Fermion energy dispersion relation of electrons and holes in graphene. At THz frequencies intraband absorption dominates and is well described by a plasmon model. We relate the measured optical features to the dispersion of electrons, holes, and plasmons in graphene.

© 2008 Optical Society of America

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